Mitutoyo 368-991 Holtest Micrometer Set, type II, 12 to 20 mm

Description

The Mitutoyo 368-991 Holtest Micrometer Set, type II, 12 to 20 mm is a mechanical, three-point internal micrometer set for measuring the inside diameter of bores. This "Type II" economy set is designed with hardened steel measuring contacts, a cost-saving alternative to the titanium-coated contacts on other models, but it maintains the same accuracy.

Key features

• Three-point contact: The micrometer's three anvils make it self-centering, ensuring accurate and stable measurements inside a hole.
• Hardened steel anvils: The measuring contacts are made of hardened, alloyed steel, offering good durability at a lower cost than the titanium-coated versions.
• Repeatable measurement: A ratchet stop provides a constant measuring force, leading to consistent measurements with minimal variation between different operators.
• Blind hole measurement: The geometry of the contact points allows measurements to be taken close to the bottom of a blind hole.
• Included accessories: The set comes with one 16 mm diameter setting ring, an extension rod for measuring deeper holes, and a fitted case for storage and protection.